Improved heat dissipation structure for split installation of telescopic main shaft assembly of numerical control machine tool

Abstract

The utility model provides a numerical control machine tool telescopic main shaft assembly split installation improved heat dissipation structure which comprises an outer sleeve, bearing seats are arranged at the two ends of the outer sleeve, bearings are arranged in the bearing seats, a main shaft body is arranged in the outer sleeve, the main shaft body corresponds to the bearings, and the main shaft body comprises a first shaft body and a second shaft body. Heat dissipation structures are arranged in the first shaft body and on the peripheral side of the second shaft body, a telescopic structure is arranged between the first shaft body and the second shaft body, and a fixing structure is arranged between the first shaft body and the second shaft body. According to the oil cooler, the bearing seats are installed at the two ends of the outer sleeve, the bearings are installed in the bearing seats, the two sets of bearings can be separated, heat dissipation is conducted separately, the heat dissipation effect is improved, the oil inlet end and the oil outlet end are arranged in the front and back of the oil cooler, the cooling speed is increased, heat can be taken away rapidly, and the service life of the oil cooler is prolonged. The telescopic structure and the fixing structure are installed between the first shaft body and the second shaft body, heating caused by compression of hydraulic oil is avoided, and therefore the rotating speed can be increased.

Description

Technical Field

[0001] The utility model relates to the technical field of spindle heat dissipation structures, in particular to an improved heat dissipation structure for the split installation of a telescopic spindle assembly of a numerical control machine tool. Background Technique

[0002] With the development of machining and manufacturing technology, the requirement for the spindle speed of numerical control machine tools is getting higher and higher. A major problem restricting the spindle speed is the temperature rise during spindle operation. One of the main measures to solve the temperature rise is to cool and dissipate heat. When the existing spindles are installed, most of them concentrate a set of spindle components into a whole. Although this installation method is relatively convenient, the temperature rise of the spindle affects the spindle operation speed. Moreover, most of the telescopic methods of the existing telescopic spindles are driven by hydraulic pressure. During operation, the spindle will compress the hydraulic oil, and the compression of the hydraulic oil will cause heat generation, thus affecting the heat dissipation of the spindle.

[0003] Therefore, the utility model provides an improved heat dissipation structure for the split installation of a telescopic spindle assembly of a numerical control machine tool. Content of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide an improved heat dissipation structure for the split installation of a telescopic spindle assembly of a numerical control machine tool to solve the problems put forward in the above background technique. The utility model separates two groups of bearings for separate heat dissipation to improve the heat dissipation effect. Moreover, two oil inlet and outlet ends are divided at the front and back of the oil cooler to improve the cooling speed and be able to take away heat faster. The telescopic function can be realized through a physical structure, thus eliminating the need to use hydraulic pressure and avoiding heat generation caused by the compression of hydraulic oil, thereby increasing the rotational speed.

[0005] To achieve the above purpose, the utility model is realized through the following technical solutions: An improved heat dissipation structure for the split installation of a telescopic spindle assembly of a numerical control machine tool, including an outer sleeve. Bearing seats are installed at both ends of the outer sleeve. Bearings are installed in the bearing seats. A spindle body is installed in the outer sleeve. The spindle body corresponds to the bearings. The spindle body includes a first shaft body and a second shaft body. Heat dissipation structures are installed on the circumferences of the first shaft body and the second shaft body. A telescopic structure is installed between the first shaft body and the second shaft body. A fixing structure is installed between the first shaft body and the second shaft body.

[0006] Furthermore, a chute is opened in the first shaft body, and the chute corresponds to the second shaft body.

[0007] Furthermore, the telescopic structure includes a threaded shaft fixed in the chute, and the second shaft body is in threaded cooperation with the threaded shaft.

[0008] Furthermore, a threaded groove is opened in the second shaft body, and the threaded groove corresponds to the threaded shaft.

[0009] Further, a first groove is formed on the circumferential side of the first shaft body, and a second groove is formed on the circumferential side of the second shaft body. The heat dissipation structure includes cooling pipes installed in the first groove and the second groove.

[0010] Further, the fixing structure includes a compression ring located on one side of the first shaft body and corresponding to the second shaft body.

[0011] Further, an installation head is fixed on one side of the compression ring, and an installation groove is formed in the first shaft body corresponding to the installation head.

[0012] Further, the relative inner side of the compression ring is of an inclined surface structure.

[0013] The beneficial effects of the present utility model: The telescopic spindle assembly of the numerical control machine tool of the present utility model is separately installed to improve the heat dissipation structure, including an outer sleeve; a bearing seat; a bearing; a first shaft body; a second shaft body; a telescopic structure; a fixing structure.

[0014] Bearing seats are installed at both ends of the outer sleeve, and bearings are installed in the bearing seats, so that the two groups of bearings can be separated, thereby dissipating heat separately, improving the heat dissipation effect, and the oil cooler is divided into two oil inlet and outlet ends at the front and back, improving the cooling speed, and can quickly take away the heat. A telescopic structure and a fixing structure are installed between the first shaft body and the second shaft body, and telescoping can be achieved through a physical structure, so that hydraulic pressure does not need to be used, avoiding heat generation caused by the compression of hydraulic oil, and thus the rotation speed can be increased. Description of the Drawings

[0015] Figure 1 It is an overall assembled three-dimensional structure schematic diagram of the telescopic spindle assembly of the numerical control machine tool of the present utility model with separately installed improved heat dissipation structure;

[0016] Figure 2 It is an overall assembled sectional structure schematic diagram of the telescopic spindle assembly of the numerical control machine tool of the present utility model with separately installed improved heat dissipation structure;

[0017] Figure 3 For Figure 2 The schematic diagram at A in

[0018] Figure 4 It is an assembled structure schematic diagram of the spindle body in the telescopic spindle assembly of the numerical control machine tool of the present utility model with separately installed improved heat dissipation structure;

[0019] In the figure: 1. Outer sleeve; 2. Bearing seat; 3. Bearing; 4. Spindle body; 5. First shaft body; 6. Second shaft body; 7. First groove; 8. Second groove; 9. Threaded shaft; 10. Thread; 11. Compression ring; 12. Installation head; 13. Installation groove; 14. Slide groove. Detailed Embodiments

[0020] To make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] Please refer to Figures 1 to 4 , the present utility model provides a technical solution: the split installation of the telescopic spindle assembly of the numerical control machine tool improves the heat dissipation structure, including an outer sleeve 1, bearing seats 2 are installed at both ends of the outer sleeve 1, bearings 3 are installed in the bearing seats 2, a spindle body 4 is installed in the outer sleeve 1, the spindle body 4 corresponds to the bearing 3, the spindle body 4 includes a first shaft body 5 and a second shaft body 6, heat dissipation structures are installed on the periphery of the first shaft body 5 and the second shaft body 6, a telescopic structure is installed between the first shaft body 5 and the second shaft body 6, and a fixing structure is installed between the first shaft body 5 and the second shaft body 6.

[0022] In this embodiment, a chute 14 is opened in the first shaft body 5, the chute 14 corresponds to the second shaft body 6, the telescopic structure includes a threaded shaft 9 fixed in the chute 14, the second shaft body 6 is in threaded cooperation with the threaded shaft 9, and a threaded groove 10 is opened in the second shaft body 6, the threaded groove 10 corresponds to the threaded shaft 9.

[0023] Specifically, when it is necessary to adjust the length of the spindle body 4, rotate the second shaft body 6, so that the second shaft body 6 rotates spirally in the chute 14 through the threaded shaft 9, and then the second shaft body 6 can be slid out, and the length of the spindle body 4 can be adjusted.

[0024] The fixing structure includes a pressure ring 11, the pressure ring 11 is located on one side of the first shaft body 5, the pressure ring 11 corresponds to the second shaft body 6, an installation head 12 is fixed on one side of the pressure ring 11, an installation groove 13 is opened in the first shaft body 5, the installation groove 13 corresponds to the installation head 12, and the relative inner side of the pressure ring 11 is a bevel structure.

[0025] Specifically, when it is necessary to fix the length of the spindle body 4, push the pressure ring 11, so that the installation head 12 is inserted into the installation groove 13, and the pressure ring 11 squeezes the second shaft body 6. At this time, both ends of the second shaft body 6 are limited by the pressure ring 11 and the threaded shaft 9 respectively, so that the length of the spindle body 4 can remain unchanged. Then, the installation head 12 can be fixed in the installation groove 13 through bolts, so as to ensure the stability of the spindle body 4.

[0026] A first groove 7 is opened on the periphery of the first shaft body 5, a second groove 8 is opened on the periphery of the second shaft body 6, and the heat dissipation structure includes cooling pipes installed in the first groove 7 and the second groove 8.

[0027] Specifically, by introducing a coolant into the cooling pipes, the first shaft body 5 and the second shaft body 6 can be cooled, thereby preventing the spindle body 4 from overheating and ensuring the rotation speed of the spindle body 4.

[0028] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. The telescopic spindle assembly of the numerical control machine tool is separately installed to improve the heat dissipation structure, including an outer sleeve (1), characterized in that, Both ends of the outer sleeve (1) are provided with bearing seats (2). Bearings (3) are installed in the bearing seats (2). A main shaft body (4) is installed in the outer sleeve (1). The main shaft body (4) corresponds to the bearings (3). The main shaft body (4) includes a first shaft body (5) and a second shaft body (6). Heat dissipation structures are installed on the inner side of the first shaft body (5) and on the circumferential side of the second shaft body (6). A telescopic structure is installed between the first shaft body (5) and the second shaft body (6). A fixing structure is installed between the first shaft body (5) and the second shaft body (6).

2. The improved heat dissipation structure for the split installation of the telescopic spindle assembly of the numerical control machine tool according to claim 1, characterized in that: A chute (14) is formed in the first shaft body (5). The chute (14) corresponds to the second shaft body (6).

3. The split installation of the telescopic spindle assembly of the CNC machine tool according to claim 2 improves the heat dissipation structure, characterized in that: The telescopic structure includes a threaded shaft (9) fixed in the chute (14). The second shaft body (6) is in threaded cooperation with the threaded shaft (9).

4. The split installation of the telescopic spindle assembly of the numerical control machine tool according to claim 3 improves the heat dissipation structure, characterized in that: A threaded groove (10) is formed in the second shaft body (6). The threaded groove (10) corresponds to the threaded shaft (9).

5. The split installation and improved heat dissipation structure of the telescopic spindle assembly of the numerical control machine tool according to claim 1, characterized in that: A first groove (7) is formed on the circumferential side of the first shaft body (5). A second groove (8) is formed on the circumferential side of the second shaft body (6). The heat dissipation structure includes cooling pipes installed in the first groove (7) and the second groove (8).

6. The split installation of the telescopic spindle assembly of the numerically controlled machine tool improves the heat dissipation structure, characterized in that: The fixing structure includes a compression ring (11). The compression ring (11) is located on one side of the first shaft body (5). The compression ring (11) corresponds to the second shaft body (6).

7. The improved heat dissipation structure for the split installation of the telescopic spindle assembly of the numerical control machine tool according to claim 6, characterized in that: An installation head (12) is fixed to one side of the compression ring (11). An installation groove (13) is formed in the first shaft body (5). The installation groove (13) corresponds to the installation head (12).

8. The improved heat dissipation structure for the split installation of the telescopic spindle assembly of the numerical control machine tool according to claim 6, characterized in that: The relative inner side of the compression ring (11) is of an inclined surface structure.

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